package chapter02;

public class Example22 {
    public static void main(String[] args) {
        int[] arr;
        arr = new int [3];
        System.out.println("arr[0]="+arr[0]);
        System.out.println("arr[1]="+arr[1]);
        System.out.println("arr[2]="+arr[2]);
        System.out.println("数组的长度是;"+ arr.length);
    }
}
